Primecoin Val/h rate, how to increase it?

[Viscera]

Mining Primecoin there is a Val/h rate that slowly increases the longer you have it running.

I'm currently mining on two separate computers and it seems the slower computer has faster increasing Val/h rate than the faster computer.

I cannot work out why or how to improve this rate. They are both running identical windows 7 64 bit operating systems and both using the same miner from the yPool website. Any thoughts on what effects the Val/h rate and how to improve it?

thanks

[1715622328]

1715622328

[1715622328]

1715622328

[1715622328]

1715622328

[neo101one]

It changes by the shares that you find and their value. If you dont find any shares the val/h decreases and vice versa.

[bcp19]

luck.